MessageBlue vs rustpush

Compare MessageBlue and rustpush side by side: iMessage features, channels, developer tools, pricing and compliance, checked on each provider's own site.

MessageBlue

iMessage API for agents, with bring-your-own-number
Starting price
$100/month per line
Free plan
$0 with your own number and Mac, all features, limited seats

rustpush

Rust library for the iMessage, FaceTime and APNs protocols
Starting price
Free
Free plan
Free source (SSPL v1)

MessageBlue supports 38 of the 77 features compared here, and rustpush supports 39.

Feature comparison

FeatureMessageBluerustpush
iMessage messaging
iMessage
Supported
SupportedRegisters as an Apple device and talks to Apple's servers directly; read from source, no docs
Group chats
SupportedSend text, attachments and voice notes to groups; receive group messages.
SupportedConversations carry a participant list and optional group name
Group management
PartialCreate groups of 2 to 31 by API; no add or remove participant endpoints.
SupportedChangeParticipants messages add or remove members
Group name and photo
Not listed
SupportedRename and IconChange messages set a group's name and photo
Mentions
Not listed
SupportedMention message parts
Tapbacks
SupportedSend or remove emoji or tapbacks; inbound tapbacks arrive by webhook.
SupportedSix classic tapbacks plus emoji; sticker tapbacks are receive only
Threaded replies
Not listed
Supportedreply_guid and reply_part on messages
Typing indicators
SupportedSend and stop, up to 20 seconds; no inbound typing webhook documented.
SupportedTyping message type
Read receipts
SupportedSend read receipts; outbound messages report a read status.
SupportedRead and Delivered message types
Edit and unsend
Not listed
SupportedEdit and Unsend message types
Message effects
Not listed
Supportedeffect field on messages
Animated text effects
Not listed
SupportedBig, small, shake, nod, explode, ripple, bloom and jitter
Stickers
Not listed
PartialSticker tapbacks are received; the code marks sending them as unsupported
Formatted text
Not listed
SupportedBold, italic, underline and strikethrough
Attachments
SupportedAttachments by public URL.
SupportedInline data or MMCS (iCloud) file transfer
Live Photos
Not listed
PartialReceived attachments carry a Live Photo flag; uploads always set it to false
Rich link previews
Not listed
SupportedLinkMeta with LPLinkMetadata rich link data
Voice messages
SupportedTo individuals and groups.
Supportedvoice flag on messages
Contact cards
Not listed
Not listed
Polls
Not listed
Not listed
Chat backgrounds
Not listed
SupportedSetTranscriptBackground sets or removes a chat background
Location sharing
Not listed
PartialFind My clients read friends' and items' locations; OpenBubbles says sharing live location is unsupported
iMessage apps
Not listed
SupportedExtension app balloons with template layouts
Live app cards
Not listed
SupportedUpdateExtension messages update a sent app balloon
Sender name and photo
Not listed
SupportedShare Name and Photo, including contact posters
FaceTime calls
Not listedInbox video call button is marked coming soon; voice calls need the team to enable.
SupportedCreate, ring, join and leave FaceTime sessions
Delivery status
Supportedsent, delivered, read, SMS_FALLBACK and failed via status webhook.
SupportedDelivered and Read receipts plus error messages
iMessage availability check
SupportedCheck a number, or a whole group's participants, before sending.
SupportedIDS lookups validate targets before sending
Focus and Notify Anyway
Not listed
SupportedNotifyAnyways messages; StatusKit shares and receives Focus status
Numbers and delivery
Managed lines
SupportedRequest a number and the team provisions it, typically in 3 to 5 business days.
Not supportedA library; you register your own Apple ID and device identity
Dedicated numbers
Supported$100/mo per line on Startups & SMB.
Not supportedNot offered
Shared numbers
Not listed
Not supported
Bring your own number
SupportedPair your own Mac and its Apple ID number with the MessageBlue agent.
SupportedYour own Apple ID; a phone number registers through an iPhone running a relay app
Line pooling
SupportedAssigns the least-mapped number per contact and remaps contacts if a number is blocked.
Not listed
SMS fallback
SupportedStatus event reports SMS_FALLBACK; not available for group creation.
Not listed
RCS fallback
Not listedMarketing pages say SMS or RCS fallback; docs only describe SMS.
Not listed
Outbound-first messaging
SupportedStart chats with any iMessage-capable number; warns after 5 unanswered messages.
SupportedSend to any handle after an IDS key lookup
Calls on the iMessage number
Not listedInbox voice call button says to contact the team; number used is not stated.
PartialFaceTime on the same Apple ID; no phone calls
Other channels
SMS
PartialOnly as fallback; new chats need an iMessage-capable recipient.
PartialSMS message type, sent through text forwarding from a registered iPhone
RCS
Not listedMentioned only as a fallback on marketing pages.
Not listed
WhatsApp
Not supportedNot offered
Not supportedNot offered
Telegram
Not supported
Not supported
Slack
Not supported
Not supported
Email
Not supported
Not supported
Phone calls
Not listedInbox voice call button says to contact the team; call type and number not stated.
Not supportedNot offered; FaceTime only
Apple Messages for Business
Not supportedNot offered
Not supportedNot offered
Unified channel API
PartialOne API for iMessage and its SMS fallback only.
PartialiMessage and forwarded SMS share one message type; no other channels
Developer tools
REST API
SupportedOpenAPI 3.1 spec published.
Not supportedRust library only; no HTTP API
TypeScript SDK
Supportednpm messageblue (0.0.7), generated from the OpenAPI spec.
Not listedRust crate only
Python SDK
Not supportedDocs say only TypeScript is published today; other languages on request.
Not listed
Other SDKs
Not supported
PartialThe library itself is a Rust crate; no other language bindings found
CLI
Not listedThe API page mentions a CLI, but none is documented.
Not listed
Webhooks
SupportedInbound and status URLs with retries and dead-lettering.
Not supportedLibrary only; your code receives messages directly, no webhooks
Signed webhooks
SupportedX-MB-Signature: HMAC-SHA256 over timestamp and raw body.
Not supportedNo webhooks
MCP server
PartialDocumentation-only MCP server at docs.messageblue.ai/_mcp/server.
Not listed
Open source
Not listed
PartialSource under SSPL v1; the Mac validation-data module is a closed-source stub
Self-hosting
SupportedEnterprise plan: your cloud (BYOC), VPC or on-prem
SupportedRuns inside your own application
Local testing
PartialBrowser test bench runs the no-code agent without sending an iMessage.
Not listed
Custom channel providers
Not listed
Not listed
Event replay
SupportedFailed and dead-lettered deliveries are kept and can be replayed.
Not listed
OpenTelemetry
Not listed
Not listed
No-code integrations
SupportedZapier, plus a no-code agent builder.
Not listed
CRM integrations
SupportedAgent connects to Salesforce, HubSpot and others; HubSpot inbox sync is private beta.
Not listed
Built for AI agents
Agent framework
SupportedNo-code agent with model choice, prompt, knowledge, tools, memory and multi-step tasks.
Not listed
Agent framework integrations
Not listedSite says it works with LangChain and the Vercel AI SDK via webhooks; no official integration.
Not listed
Streaming replies
Not listed
Not listed
Agent group chats
Not listed
Not listed
Human handoff
SupportedTeam inbox for manual replies; pause the agent or block it per contact.
Not listed
Audit logs
SupportedOn the Business and Enterprise plans
Not listed
Message history API
SupportedConversation by phone number.
SupportedMessages in iCloud sync for chats, messages and attachments
Plans and compliance
Free plan
Supported$0 when you bring your own number on your own Mac; every feature included.
SupportedFree source under SSPL v1
Public pricing
SupportedFree and $100/mo listed; Business and Enterprise are contact sales.
Not listedNo prices or commercial license terms published
No per-message fees
SupportedFlat $100/mo per line.
SupportedNo fees; free source
Uptime SLA
Supported99.9% SLA listed from the $100 plan; the API page says enterprise plans
Not supportedSSPL disclaims all warranty
Isolated infrastructure
SupportedEnterprise plan: single-tenant or self-hosted stack
SupportedRuns in your own process and infrastructure
SOC 2 Type II
PartialEnterprise page claims audited SOC 2 Type II; pricing says SOC 2 ready; no report found.
Not listedSelf-hosted; compliance is up to the operator
GDPR
Not listed
Not listed

Checked on each provider's own site and docs on 2026-10-25. “Not listed” means the provider does not mention it.

Pricing

MessageBlue

Free when you bring your own number on your own Mac; a dedicated line is $100 a month on Startups & SMB, and Business and Enterprise are contact sales.

Pricing model: flat per line

Source

rustpush

rustpush is free source under SSPL v1; you supply Apple hardware identifiers or an always-on iPhone relay, and anyone offering it as a service must publish their service's source.

Pricing model: free self-hosted library

Source

Which should you choose?

Choose MessageBlue if you need managed lines, dedicated numbers, line pooling and SMS fallback.

Choose rustpush if you need group name and photo, mentions, threaded replies and edit and unsend.

Frequently asked questions